Oil burner



July 1927 G. J. DELFELD ET AL 0 IL BURNER Filed Aug. 17, 1926 K2 X w w J 2 e Georg? J 627% 7 Inventors FTZ'ZZ'OH Patented July 12; 1927.

GEORGE J. DELFELD Ann Barter on w. SWAIN, or SAZE'ULPA,'OKL'AI-IOMA.

OIL BURNER.

Application filed August 17,1926. sem No. 129,770.

7 This invention relates to animproved oil burner which is especially, but not necessarily adapted for use with locomotive boilers, and it has more particular reference to aburner of this kind which has been espe' cially designed for consuming comparatively heavy crude oils and analogous fuels.

Our principal aim is to provide an especially constructed burner which is such as to minimize the'formation of carbon deposits, not only on the burner itself but upon the walls of the fire box in which it is used.

An equally important aim is to conserve the consumption of fuel, to reduce vibration,

' to substantially eliminate the objectionable drumming noise which usually accompanies burners of this class, and'to promote good combustion by providing proper atomization of the fuel charge.

-Moreover, we aim to provide a burner which is of a construction to insure smooth burning, one which is exceptionally simple in construction and inexpensive to .both the manufacturer and the user, the same being in the form of a one-piece construction to avoid dislocation of parts and to render the construction exceptionally compact and convenient. Y

Other features and advantages of the invention will become apparent from the following description and drawing.

In the accompanying drawing Figure 1 is a central longitudinal section through a burner constructed in accordance with the present invention.

Figure 2 is a cross section taken approximately upon the plane of the line 22 of Figure 1.

Figure 3 is abottom burner, and

Figure 4 is a front QlBVELtlOH of the same. In carrying out the invention a. single plan view of the metal casting is provided and is formulated v to produce an oil conduit 1, an atomizer conduit 2, and a supportmg and attaching base or bracket 3. The major portion of these conduits indicated by the reference characters 4 and 5 respectively are cylindrical in cross section. At one end screw threads 6 and 7 are provided for connection of suitable supply pipes not shown). Beginning at about the point 8, these conduits are gradually widened and simultaneously flattened to formulate discharge nozzles. In both instances, the nozzles'are of oblong shape or represent a parallelogram in end elevation.

The oil nozzle is representediby thereference character 9 and the air-and steam or atomiz-' 7 ing n'ozzle is represented by the reference character 10. As shown better in Figure 4: theoi'l nozzle 9 is provided withan elongated discharge slot 11 of predetermined proportion. The discharge nozzle 10 is'likewise provided with an elongated discharge slot 12, but it'will be seen that this is wider than and narrower than theslot 11. These proportions are regarded as essential for proper operation. As shown better in Figure 1, the oil nozzle overhangs or extends beyond the atomizing nozzle 10, and a groove 13 is formed in the under side of the ex tending portion. w

In connection with the device it is to be stated that the discharge nozzle of the 'oil conduit must be wider than the general outline of the body portion. The discharge passage itself must extend inwardly or back a short distance and have the same general shape as the oblong nozzle, and then gradur allymerge into the cylindrical outline of the body portion of the tube, thus making a perfect breaker for the oil, concentrating the same, and insurlng proper mixture and ex-.-

pulsion. Of course, the wall on theinterior must be perfectly smooth and free fromall obstructions. The atomizer tube is of the samegeneral outline with the exception of the outlet passage which is somewhat longer and narrower in order to insure the discharge of a substantially flat sheet of air or steam. By permitting the atomizer noz zle ,to terminate short or inwardly of the complemental oil nozzle, a spaceis provided for the oil groove, thus preventing oil from coming down. beneath and entering, the atomizer nozzle. Instead whatever oil that runs in this manner will accumulate in the groove- It is maintained. that a burner of this design will preserve the interior lining of the fire box which is generally composed offire brick walls, thus eliminating heavy cost of. I

applying new bricks and other forms oflining. There are no removable parts to get out of order. The burner may be easily,

cleaned from either end, and taking these advantages into consideration with those pre viously given, it is believed that this particu- I lar construction is superior over known marketed and patented burners. It is also thought that byconsidering the description in conjunction with the drawing a clearun- 'derstanding of the construction and operation of the burner will be had. Consequently, a more detailed description is believed unnecessary.

Having thus described we claim is 7 An oil burner of the class described comthe invention, What prising a single metal casting having an oil 's-extending passagefland an atomizing passa longitudinallytherethrough, the major p01- (310113 of saidpassages being cylindrical and merging at their outer ends into widened and flattened passages providing restricted discharge nozzles, vhe air nozzle disposed bedisposed oil collecting long configuration, the oil discharge opening being Wider and shorter than the com- 7 pleniental air discharge opening.

tn'res.

GEORGE J. DELFELD. BRITTON N. SVAIN.

groove andthe dis- 1 vCharge openings of said nozzle being of ob- In testimony whereof We afix our signa- 

